【填空题】
make it, with open arms ,strip off,keep back, free of/ from ,after all,straighten up, throw away Redecorating the house is a challenging task. It's necessary to [ ] the wallpaper first.
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答案
strip off
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[21]初始开车时,透平单试包括___。
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[22]裂解气压缩机试车升速时应注意的问题有___。
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D. 出口温度不能过低
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[23]裂解气压缩机正常运行时,应该随时检查___。
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[24]防止离心式压缩机喘振的最有效措施是___。
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[25]关于抽汽凝汽式透平建立真空的叙述正确的有___。
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[26]关于裂解气压缩机一段吸入压力,下列说法正确的有___。
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B. 一段吸入压力高会降低裂解炉烃分压
C. 一段吸入压力太高不利于裂解反应的进行
D. 一段吸入压力随着装置的负荷的改变而改变
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[27]裂解气压缩机正常停车前的准备工作有___。
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[28]手提式二氧化碳灭火器灭火采用的方法有___。
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[29]往复泵调节流量的方法有___。
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[30]停压缩机润滑辅助油泵时应注意的事项有___。
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[31]调速油主要供给透平的___。
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[32]复水泵检修后投用的注意事项有___。
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[60]动火的原则为___不许动火。
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